Review of Optical Pre-Sensor Computing Technology and Its Satellite Remote Sensing Applications(Invited)
Optical pre-sensor computing is a technique involving information computation and processing in the optical domain at the front end of photoelectric sensors.This encompasses computation paradigms such as encoding compression and all-optical intelligent inference.It exhibits significant characteristics,such as computation during optical transmission and structure-function correlation,making it widely applicable in the field of satellite remote sensing.This paper introduces optical field modulation devices employed in pre-sensor computing,such as digital micromirror device(DMD),liquid crystal spatial light modulator(LC-SLM),diffractive optical element(DOE),and metasurface.Subsequently,we systematically review the pertinent technological advancements in pre-sensor encoding compression and all-optical intelligent inference.Finally,the application pathways and future development trends of optical pre-sensor computing in the field of satellite remote sensing are discussed.
optical pre-sensor computingencoding and compressionall-optical intelligent inferencesatellite remote sensing
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